cajoler vs sweet-talk

cajoler

noun
  • A speech act intended to persuade or convince, such as the utterance "you know". 

  • A person who cajoles; a flatterer. 

sweet-talk

noun
  • A manner of talking to someone in a pleasing or funny way in order to persuade them to do or believe something. 

verb
  • To persuade using flattery. 

  • To flatter. 

How often have the words cajoler and sweet-talk occurred in a corpus of books? (source: Google Ngram Viewer )